The first episode was recorded in September 1963 on 405-line black and white videotape. However, due to several technical and performance errors in the initial recording, creator Sydney Newman and producer Verity Lambert decided to rerecord the episode. A remount was made in October, when subtle revisions were made to the Doctor's characterization.
The launch of Doctor Who was overshadowed by the assassination of John F. Kennedy the previous day. The serial received favourable reviews and the four episodes attracted an average of 6 million viewers.